CN209656929U - Restructural liquid-core optical fibre and its laser - Google Patents
Restructural liquid-core optical fibre and its laser Download PDFInfo
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- CN209656929U CN209656929U CN201920411064.9U CN201920411064U CN209656929U CN 209656929 U CN209656929 U CN 209656929U CN 201920411064 U CN201920411064 U CN 201920411064U CN 209656929 U CN209656929 U CN 209656929U
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Abstract
The utility model relates to a kind of restructural liquid-core optical fibres and its laser, and the restructural liquid-core optical fibre includes sequentially connected first sub-optical fibre, the second sub-optical fibre and third sub-optical fibre；Second sub-optical fibre includes the second fibre core, and second fibre core is hollow structure, and first sub-optical fibre and third sub-optical fibre make the second sub-optical fibre form a resonant cavity jointly；Wherein, second sub-optical fibre is equipped with fluid flow paths, the fluid flow paths and the connection of the second fibre core, and the fluid flow paths are used to inject into the second fibre core and liquid dyes are discharged, to form restructural liquid-core optical fibre.The utility model is by being arranged fluid flow paths on the second sub-optical fibre, and when needing to export the laser of different wave length, only corresponding liquid dyes need to be replaced by fluid flow paths can be realized reconstruct, to export the laser of respective wavelength, improves its applicability.
Description
Technical field
The utility model relates to optical technical fields, more particularly to a kind of restructural liquid-core optical fibre and its laser.
Background technique
Optical fiber laser application range is very extensive, including laser fiber communication, laser space remote communication, industry are made
Ship, automobile manufacture, laser engraving laser marking laser cutting, printing roller processed, metal and nonmetal drilling/cutting/welding (brazing,
Hardening, covering and depth welding), military and national defense safety, medical instrument instrument and equipment, large foundation construction, as its separate excitation
The pumping source etc. of light device.The fiber amplifier that optical fiber laser is developed into using the optical fiber of rare earth doped element is to lightwave technology
Field brings revolutionary variation.Since any image intensifer all can form laser by appropriate feedback mechanism,
Optical fiber laser can be developed on the basis of fiber amplifier.The optical fiber laser developed at present is mainly first using rare earth is mixed
The optical fiber of element is as gain media.Since fiber core is very thin in optical fiber laser, under the action of pump light in optical fiber easily
High power density is formed, the laser levels " population inversion " of working-laser material are caused.Therefore, when suitably adding positive and negative be fed back to
Road (constituting resonant cavity) can form laser generation.
Microflow control technique obtains development at full speed in recent years, by combining microflow control technique and optical technology, to be formed
Optofluidic technology.Liquid dyes have threshold value low as excellent laser gain medium, and wavelength regulation range is wide, basic to cover
Entire visible light region is also extend to ultraviolet and infrared region using frequency doubling technology.Therefore, liquid-core optical fibre laser is met the tendency of
And it gives birth to.In the prior art, liquid-core optical fibre laser is many kinds of, but same type of liquid-core optical fibre laser can only be defeated
The laser of single wavelength out causes the applicability of liquid-core optical fibre laser low.
Utility model content
The purpose of this utility model is to provide a kind of restructural liquid-core optical fibres and its laser, can export not
The laser of co-wavelength, to improve the applicability of laser.
In order to solve the above-mentioned technical problem, technical solution provided by the utility model are as follows:
A kind of restructural liquid-core optical fibre, including sequentially connected first sub-optical fibre, the second sub-optical fibre and third sub-light
It is fine；Second sub-optical fibre includes the second fibre core, and second fibre core is hollow structure, first sub-optical fibre and third sub-light
Fibre makes the second sub-optical fibre form a resonant cavity jointly；Wherein, second sub-optical fibre is equipped with fluid flow paths, the liquid
Circulation passage and the connection of the second fibre core, the fluid flow paths are used to that liquid dyes to be injected and be discharged into the second fibre core, from
And form restructural liquid-core optical fibre.
Wherein, the fluid flow paths are equipped with port, and the port is used for the liquid for injecting and being discharged in the second fibre core
Body dyestuff.
Wherein, the port is equipped with conduit.
Wherein, the port includes the first port and the second port, wherein first port is for injecting liquid dye
Material, second port is for being discharged dyestuff.
Wherein, it is equipped with the first fiber bragg grating in first sub-optical fibre, is equipped with second in the third sub-optical fibre
Fiber bragg grating, wherein the reflection wavelength of first fiber bragg grating and the second fiber bragg grating is identical,
Reflectivity of the reflectivity of first fiber bragg grating less than the second fiber bragg grating.
Another technical solution provided by the utility model are as follows:
A kind of laser, including pumping laser: the output end of the pumping laser is connected with the input terminal of wavelength division multiplexer；
Wavelength division multiplexer: the wavelength division multiplexer includes input terminal, the first output end and second output terminal, first output end and
The input terminal of first sub-optical fibre connects, and the second output terminal is used to export the laser of lasing in liquid-core optical fibre；And it is above-mentioned can
The liquid-core optical fibre of reconstruct.
Wherein, the laser further includes fibre optic isolater, the input terminal of the fibre optic isolater and wavelength division multiplexer
Second output terminal connection, the output end of the fibre optic isolater are used to export the laser of lasing in liquid-core optical fibre.
Wherein, the laser further includes laser analyzer, and the output end of the laser analyzer and fibre optic isolater connects
It connects, wherein the laser analyzer is used to analyze the information of lasing laser.
Wherein, the laser analyzer include spectroanalysis instrument, high-speed photodetector, spectrum analyzer, in oscillograph
It is any.
Wherein, the laser is distributed feedback optical fiber laser or distributed Bragg optical fiber laser.
The utility model has the following beneficial effects: the utility model is by being arranged fluid flow paths on the second sub-optical fibre,
When needing to export the laser of different wave length, corresponding liquid dyes need to be only replaced by fluid flow paths can be realized weight
Structure improves its applicability to export the laser of respective wavelength.The utility model swashs as restructural, tunable high-quality
Radiant can be applicable to the key areas such as fiber optic communication, the long range communication of laser space, military and national defense safety.
Detailed description of the invention
Referring to attached drawing, the disclosure of the utility model be will be apparent.It is to be appreciated that these attached drawings are merely illustrative
Purpose, and be not intended to and the protection scope of the utility model be construed as limiting.In figure:
Fig. 1 is the schematic diagram of the restructural liquid-core optical fibre of an embodiment according to the present utility model.
Fig. 2 is the schematic diagram of the laser of an embodiment according to the present utility model.
Fig. 3 is the method flow for being used to prepare restructural liquid-core optical fibre of an embodiment according to the present utility model
Figure.
Fig. 4 is the method flow diagram for being used to prepare laser of an embodiment according to the present utility model.
10, laser；1, restructural liquid-core optical fibre；11, the first sub-optical fibre；111, the first fiber bragg grating；12,
Second sub-optical fibre；121, the second fibre core；13, third sub-optical fibre；131, the second fiber bragg grating；14, fluid flow paths；
141, the first port；142, the second port；143, the first conduit；144, the second conduit；2, pumping laser；3, wavelength division multiplexer；
31, input terminal；32, the first output end；33, second output terminal；4, fibre optic isolater；5, laser analyzer.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Fig. 1 is the schematic diagram of the restructural liquid-core optical fibre of an embodiment according to the present utility model.
It can be seen from the figure that the restructural liquid-core optical fibre 1 can have sequentially connected first sub-optical fibre 11, second
Sub-optical fibre 12 and third sub-optical fibre 13, the second sub-optical fibre 12 include the second fibre core 121, and the second fibre core 121 is hollow structure, the
One sub-optical fibre 11 and third sub-optical fibre 13 make the second sub-optical fibre 12 form a resonant cavity jointly；Wherein, it is set on the second sub-optical fibre 12
There are fluid flow paths 14, fluid flow paths 14 are connected to the second fibre core 121, and the second sub-optical fibre 12 can be by liquid flow all
Road 14 injects into the second fibre core 121 and liquid dyes is discharged, to form restructural liquid-core optical fibre.Present embodiment passes through
Fluid flow paths 14 are set on the second sub-optical fibre 12, when needing replacing the liquid dyes in the second fibre core 121, first by the
Liquid dyes in two fibre cores 121 are discharged by fluid flow paths 14, then required liquid dyes are passed through liquid flow all
Road 14, which injects in the second fibre core 121, can be realized reconstruct, to improve its applicability.
In the present embodiment, fluid flow paths 14 run through the second sub-optical fibre 12, and in the week of the second sub-optical fibre 12
The first port 141 and the second port 142 are formed on side wall.Liquid dyes inject the second fibre core 121 by the first port 141
It is interior, and be discharged out of second fibre core 121 by the second port 142, so that the reconstruct of restructural liquid-core optical fibre 1 can be realized.
The smart structural design can export different wavelength according to different requirements, to improve its applicability.It will be seen that In
In optional embodiment, fluid flow paths 14 can also partially run through the second sub-optical fibre 12, and in the second sub-optical fibre 12
Circumferential side wall on form a port, liquid dyes can not only be injected in the second fibre core 121 by port, but also can be logical by this
Mouth is discharged out of second fibre core 121, to realize the reconstruct of restructural liquid-core optical fibre 1.
As shown in fig. 1, it is equipped with the first conduit 143 on the first port 141, liquid can be facilitated by the first conduit 143
The injection of dyestuff；It is equipped with the second conduit 144 on the second port 142, the row of liquid dyes can be facilitated by the second conduit 144
Out.
In the present embodiment, liquid dyes can be the dyestuff of different level structures, to export swashing for different-waveband
Light, dyestuff include but is not limited to glisten dyestuff, coumarine dye and cyanine dye etc..
In the present embodiment, the liquid dyes refractive index in the second sub-optical fibre 12 is greater than the refractive index of clad material, from
And form refractive-index-guiding type waveguide.
In the present embodiment, the first sub-optical fibre 11 and third sub-optical fibre 13 are silica fibre, wherein silica fibre can be with
It is more for general single mode fiber, load hydrogen single mode optical fiber, endless single mode photonic crystal fiber, solid core multimode fibre or photonic crystal
Mode fiber etc..It will be seen that in alternative embodiments, the first sub-optical fibre 11 and third sub-optical fibre 13 may be multicomponent
Glass optical fiber or plastic optical fiber.
In the present embodiment, the first fiber bragg grating 111 is equipped in the first sub-optical fibre 11, in third sub-optical fibre 13
Equipped with the second fiber bragg grating 131, by the first fiber bragg grating 111 and the second fiber bragg grating 131, from
And a resonant cavity is collectively formed.Since the first sub-optical fibre 11, the second sub-optical fibre 12 and third sub-optical fibre 13 use split type knot
Therefore structure can replace the first sub-optical fibre 11 and third sub-optical fibre 13, and after replacement according to the difference of required feedback wavelength
The first sub-optical fibre 11 and third sub-optical fibre 13 on corresponding fiber bragg grating is written, no replacement is required whole optical fiber,
To substantially reduce cost.
Fig. 2 is the schematic diagram of the laser of an embodiment according to the present utility model.
It can be seen from the figure that the laser 10 can have pumping laser 2, wavelength division multiplexer 3 and as aforementioned any
The restructural liquid-core optical fibre 1 of embodiment, the output end of pumping laser 2 and the input terminal 31 of wavelength division multiplexer 3 connect, wavelength-division
Multiplexer 3 includes input terminal 31, the first output end 32 and second output terminal 33, the first output end 32 and the first sub-optical fibre 11
Input terminal connection, second output terminal 33 are used to export the laser of lasing in liquid-core optical fibre.
In the present embodiment, pumping laser 2 is pulse laser, the wavelength of pumping laser 2 and the energy level knot of liquid dyes
Structure is corresponding, liquid dyes molecule absorption pumping laser 2, to make electron energy level that population inversion occur.
In the present embodiment, the reflection wavelength of the first fiber bragg grating 111 and the second fiber bragg grating 131
It is identical.Wherein, the identical fiber bragg grating of two reflection wavelengths is identical with the wavelength of liquid dyes and pumping laser 2
Wavelength is different, so that pumping laser 2 be allow to inject in the resonant cavity of the second sub-optical fibre 12.
In the present embodiment, the reflectivity of the first fiber bragg grating 111 is less than the second fiber bragg grating 131
Reflectivity, laser of first fiber bragg grating 111 for lasing in output cavity；Second fiber bragg grating
131 laser for lasing in fully reflective resonant cavity, to amplify the laser of lasing.
In alternative embodiments, when between the first fiber bragg grating 111 and the second fiber bragg grating 131
Distance be 0.5mm-2mm, i.e., the length of the second optical fiber be 0.5mm-2mm, the first fiber bragg grating 111 and the second optical fiber
Bragg grating 131 can form the fiber bragg grating of a π phase shift, to form the distributed feedback of super-narrow line width
(DFB) optical fiber laser.When the distance between the first fiber bragg grating 111 and the second fiber bragg grating 131 are
2cm-5cm, the i.e. length of the second optical fiber are 2cm-5cm, can form more longitudinal mode high-capacity optical fiber lasers of dbr structure.
As shown in Figure 2, which can have fibre optic isolater 4, and the input terminal of fibre optic isolater 4 and wavelength-division are multiple
It is connected with the second output terminal 33 of device 3, the output end of fibre optic isolater 4 is used to export the laser of lasing in liquid-core optical fibre.At this
In embodiment, fibre optic isolater 4 is the magneto-optical crystal device with Faraday effect, and the laser of forward direction transmission can lead to
It crosses, no thoroughfare for the laser of reverse transfer, to prevent the laser of the reverse transfers generated due to various reasons in optical path to light
The adverse effect that source and light path system generate.
As shown in Figure 2, which can have laser analyzer 5, laser analyzer 5 and fibre optic isolater 4
Output end connection, wherein laser analyzer 5 include but is not limited to spectroanalysis instrument, high-speed photodetector, spectrum analyzer,
Oscillograph etc..The information such as wavelength, intensity, repetition, the beat frequency of lasing laser can be measured and shown by laser analyzer 5.It can
To understand, in alternative embodiments, laser analyzer 5 can also directly connect with the second output terminal 33 of wavelength division multiplexer 3
It connects, to reduce fibre optic isolater 4.
Present embodiment on the second sub-optical fibre 12 by being arranged fluid flow paths 14, when laser 10 needs to export not
When the laser of co-wavelength, only need to replace corresponding liquid dyes by fluid flow paths 14 can be realized reconstruct, to make to swash
Light device 10 exports the laser of respective wavelength, improves its applicability.The utility model is as restructural, tunable high-quality laser
Light source can be applicable to the key areas such as fiber optic communication, the long range communication of laser space, military and national defense safety.
Fig. 3 is the method flow diagram for being used to prepare optical fiber of an embodiment according to the present utility model.Including as follows
Step:
S101 prepares fluid flow paths on the second sub-optical fibre；
Fluid flow paths can be prepared using the method for femtosecond laser parallel micromachining, can also use focused-ion-beam lithography
Method preparation.Liquid dyes are flowed out from fluid flow paths in order to prevent, and therefore, the size of fluid flow paths is in micron amount
Grade.
The structure of fluid flow paths is divided into two kinds:
A, fluid flow paths run through the second sub-optical fibre, and the first port is formed in the circumferential side wall of the second sub-optical fibre
With the second port.
B, the second sub-optical fibre is run through in fluid flow paths part, and forms one in the circumferential side wall of the second sub-optical fibre and lead to
Mouthful.
Liquid dyes are injected into the second fibre core for convenience, following steps can be executed:
A, it makes marks on the first port of fluid flow paths and the second port；
B, binder is smeared in one end that conduit needs to connect using thin stick；
C, under microscope auxiliary, conduit is glued respectively on marked the first port and the second port, and added
Heat fixation.
S102 is sequentially connected the first sub-optical fibre, the second sub-optical fibre and third sub-optical fibre；
The first sub-optical fibre, the second sub-optical fibre and third sub-optical fibre are sequentially connected by way of welding, it in the pre-connection, will
The end face that first sub-optical fibre, the second sub-optical fibre and third sub-optical fibre needs connect is cut flat with and wiped clean, and the step is not only
It can reduce the loss of optical fiber, and can be improved the reliability of connection.
S103 injects liquid dyes into the second sub-optical fibre by fluid flow paths；
Suitable liquid dyes are injected in the second fibre core by the first port using syringe.
S104 writes the first fiber bragg grating of system in the first sub-optical fibre, and the second optical fiber of system is write in third sub-optical fibre
Bragg grating.
The first fiber bragg grating of system is write in the first sub-optical fibre respectively by laser phase mask plate method, in third
The second fiber bragg grating of system is write in optical fiber, and two optical fiber Bragg light are adjusted by control laser energy and time for exposure
The reflectivity of grid, to form lower first fiber bragg grating of reflectivity and higher second optical fiber Bragg of reflectivity
Grating.First fiber bragg grating and the second fiber bragg grating can also be prepared by double laser beams interferometry.It can
With understand, during preparation, can be used but be not limited to excimer laser, femto-second laser, continuous-wave laser,
Pulsed laser etc..
S105 replaces the liquid dyes in the second sub-optical fibre.
A, first the liquid dyes in the second fibre core are sucked out by the second port using rubber head dropper；
B, the second fibre core is cleaned multiple times using alcohol；
C, S103 is finally executed.
In the present embodiment, when needing replacing the liquid dyes in the second fibre core, the second port is first passed through by second
Liquid dyes discharge in fibre core, then required liquid dyes are injected in the second fibre core by the second port, weight can be realized
Structure, to improve its applicability.
Fig. 4 is the method flow diagram for being used to prepare laser of an embodiment according to the present utility model.Including such as
Lower step:
S101, fluid flow paths are prepared on the second sub-optical fibre；
S102, the first sub-optical fibre, the second sub-optical fibre and third sub-optical fibre are sequentially connected；
S103, liquid dyes are injected into the second sub-optical fibre by fluid flow paths；
First output of S104, the output end for being sequentially connected pumping laser and wavelength division multiplexer input terminal, wavelength division multiplexer
The input terminal at end and the first sub-optical fibre, the second output terminal of wavelength division multiplexer and fibre optic isolater；
In order to measure the laser feature parameter of laser injection, connect the output end of fibre optic isolater and laser analyzer
It connects.During the connection process, pumping laser and laser analyzer are closed；After connection, pumping laser and laser analyzer are opened.First lead to
It crosses spectroanalysis instrument and judges whether laser projects, after laser projects, use high-speed photodetector, spectrum analyzer, oscillography
Device measures the characteristic parameter of laser respectively.
S105, the first fiber bragg grating of system is write in the first sub-optical fibre, the second optical fiber of system is write in third sub-optical fibre
Bragg grating.
Present embodiment is by being arranged fluid flow paths on the second sub-optical fibre, when the laser for needing to export different wave length
When, only corresponding liquid dyes need to be replaced by fluid flow paths can be realized reconstruct, so that the laser of respective wavelength is exported,
Improve its applicability.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (10)
1. a kind of restructural liquid-core optical fibre, which is characterized in that including sequentially connected first sub-optical fibre, the second sub-optical fibre and
Third sub-optical fibre；Second sub-optical fibre include the second fibre core, second fibre core be hollow structure, first sub-optical fibre and
Third sub-optical fibre makes the second sub-optical fibre form a resonant cavity jointly；Wherein, second sub-optical fibre is equipped with fluid flow paths,
The fluid flow paths and the connection of the second fibre core, the fluid flow paths are used to that liquid to be injected and be discharged into the second fibre core
Dyestuff, to obtain restructural liquid-core optical fibre.
2. restructural liquid-core optical fibre according to claim 1, which is characterized in that the fluid flow paths are equipped with logical
Mouthful, the port is used for the liquid dyes for injecting and being discharged in the second fibre core.
3. restructural liquid-core optical fibre according to claim 2, which is characterized in that the port is equipped with conduit.
4. restructural liquid-core optical fibre according to claim 2, which is characterized in that the port includes the first port and the
Two ports, wherein first port is for injecting liquid dyes, and second port is for being discharged dyestuff.
5. restructural liquid-core optical fibre according to claim 1, which is characterized in that be equipped with first in first sub-optical fibre
Fiber bragg grating, the third sub-optical fibre is interior to be equipped with the second fiber bragg grating, wherein first optical fiber Bragg
The reflection wavelength of grating and the second fiber bragg grating is identical, and the reflectivity of first fiber bragg grating is less than second
The reflectivity of fiber bragg grating.
6. a kind of laser, which is characterized in that including
The described in any item restructural liquid-core optical fibres of claim 1-5；
Pumping laser: the output end of the pumping laser is connected with the input terminal of wavelength division multiplexer；And
Wavelength division multiplexer: the wavelength division multiplexer includes input terminal, the first output end and second output terminal, first output
End is connected with the input terminal of the first sub-optical fibre, and the second output terminal is used to export the laser of lasing in liquid-core optical fibre.
7. laser according to claim 6, which is characterized in that the laser further includes fibre optic isolater, the light
The input terminal of fiber isolator is connected with the second output terminal of wavelength division multiplexer, and the output end of the fibre optic isolater is for exporting liquid
The laser of lasing in core fibre.
8. laser according to claim 7, which is characterized in that the laser further includes laser analyzer, described to swash
Light analyzer is connected with the output end of fibre optic isolater, wherein the laser analyzer is used to analyze the information of lasing laser.
9. laser according to claim 8, which is characterized in that the laser analyzer includes spectroanalysis instrument, high speed
Any one of photodetector, spectrum analyzer, oscillograph.
10. laser according to claim 6, which is characterized in that the laser is distributed feedback optical fiber laser
Or distributed Bragg optical fiber laser.
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| CN201920411064.9U CN209656929U (en) | 2019-03-28 | 2019-03-28 | Restructural liquid-core optical fibre and its laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946788A (en) * | 2019-03-28 | 2019-06-28 | 深圳大学 | Restructural liquid-core optical fibre and preparation method thereof, laser and preparation method thereof |
| CN110954296A (en) * | 2019-12-11 | 2020-04-03 | 浙江科技学院 | Method and device for detecting optical signal amplification performance of liquid core optical fiber |
-
2019
- 2019-03-28 CN CN201920411064.9U patent/CN209656929U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946788A (en) * | 2019-03-28 | 2019-06-28 | 深圳大学 | Restructural liquid-core optical fibre and preparation method thereof, laser and preparation method thereof |
| CN109946788B (en) * | 2019-03-28 | 2024-03-26 | 深圳大学 | Reconfigurable liquid core optical fiber and preparation method thereof, laser and preparation method thereof |
| CN110954296A (en) * | 2019-12-11 | 2020-04-03 | 浙江科技学院 | Method and device for detecting optical signal amplification performance of liquid core optical fiber |
| CN110954296B (en) * | 2019-12-11 | 2021-03-23 | 浙江科技学院 | Method and device for detecting optical signal amplification performance of liquid core optical fiber |
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